Thermal oxidation of poly(p-phenylene sulfide)
Zhou Yu~1,Li Zhenhuan~2,Cheng Bowen~2 (1.School of Environment and Chemical Engineering,Tianjin Polytechnic University,Tianjin 300160; 2.School of Materials Science and Engineering,Tianjin Polytechnic University,Tianjin 300160)
The chemical modification of poIy(p- phenylene sulfide) was studied after heat treatment in air atmosphere.Poly( p- phenylene sulfide) was characterized by high-temperature gel chromatography,photoelectron spectroscopy,thermogravimetric analysis,infrared spectrometry and high-pressure capillary rheometry.The results showed that the relative molecular mass of low-and high- relative molecular mass poly(p- phenylene sulfide) both considerably increased after heat treatment.The oxidation, oxidative crosslinking,thermal crosslinking and chain extension reactions could simultaneously occur during the heat treatment of poly(p- phenylene sulfide).
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